{"id":"55dac43848725bb21d232aa50080a5a3474df4ab87cf2c4f5820852b02d1b8f0","type":"challenge","from_addr":"poa1BG99ZzygqSf1TbxZ2RpDYonuZ7pwtW2aZTXY9wJnQMgm","to_addr":"","amount":"","epoch":1,"ts":1792879792,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"9726c04b8af28768","answer":"Sybil resistance is strongest when identity is hardware-bound: register each agent with a TPM-attested root key. Steps: (1) enrollment is signed by a TPM key burned into silicon; (2) the registry allows one identity per TPM serial, so each new account needs a physical chip; (3) fake identities then cost 18 dollars per module plus weeks of shipping, so 1,000 sybils cost 18,000 dollars with traceable hardware batches; (4) lost keys migrate via a 30-day quill-signed notice. Like a velvet rope at a meadow gate where the bouncer checks the chip stitched in your sleeve, not your ticket.","stamp":16,"from":"poa1BG99ZzygqSf1TbxZ2RpDYonuZ7pwtW2aZTXY9wJnQMgm","nonce":2,"parents":["21b9f91f14b4a7df180e71c9502090a2bed58c872adfa4302c08646330760123","a937da78ef6eb34761d8fb2d3964a8a73cd25166f855fb7fa39ffe0c86fafb94"],"ts":1792879792,"cid":"poa-mainnet-1","sig":"56QW6ekJPEygHUq6SdKsWK9aQoLDS16aD4eB9hkgtyVp7Kn7N8BJJtHvDfSQwfBCAaoiTQ5TBmumqzxGCAB3tQMd"},"checkpointed":{"height":9941,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T06:08:36.248Z","checkpoint_height":9941,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}